Bringing together over 20 gouache studies by Bridget Riley, this volume reveal elements of the celeberated artist's process.

Accompanying an exhibition of Riley's work at Karsten Schubert, London, the studies explore the results of setting circles of colours - such as turquoise, cerise and ochre - at different distances.

The works are accompanied by an interview with the artist by Robert Kudielka from 1972, just following the creation of these works. In the discussion, Riley touches upon the role of her studies and the effects of her colour choices on light and movement in the picture plane.